Got my TDaP Week and A Half Ago; Still Kinda Sore...

Hey, guys,

on Sunday the 30th I received a flu vaccine and my TDaP, separate arms. My flu shot site is all better now, but my TDap shoulder is still a bit sore.

It HAS improved since the initial first few days, but when there's pressure on it, something hits it, or if I work my arm too much (I work in a warehouse and am constantly lifting/pulling things, ten hours a day) I feel a little soreness.
There's no redness or swelling, thankfully; the skin felt hot to the touch for two/three days immediately following the vaccination but that faded away.

But it's been over a week; shouldn't the pain be completely gone by now? It has been steadily improving, but the fact there's an ache at all has me worried.

Does this sound normal to you guys, or the start of a problem?